CYANINE COMPOUNDS, OPTICAL FILTERS AND OPTICAL RECORDING MATERIALS

摘要

Cyanine compounds represented by the general formula (I), (VI), or (VII): (I) [wherein A¹ is an optionally substituted benzene or naphthalene ring; B is a group represented by the general formula (II) or (III); R¹ is hydrogen, halogeno, C_1-8 alkyl, C_1-8 alkoxy, or C_6-30 aryl; R² is a substituent represented by the general formula (IV); and Y¹ is hydrogen, an organic group having 1 to 30 carbon atoms or a substituent represented by the general formula (IV)] (VI) (VII) [wherein A² is as defined above for A¹ in the general formula (I); Y⁴ and Y⁵ are each independently as defined above for Y¹ in the general formula (I); X² is as defined above for X¹ in the general formula (I); R¹⁰ is as defined above for R¹ in the general formula (I); R¹¹ is as defined for R² in the general formula (I); R²³ and R²⁴ are as defined for R²¹ and R²² in the general formulae (II) and (III); n is an integer of 0 to 6; the polymethine chain may be substituted; An^q- is a q-valent aninon; q id 1 or 2; and p is a coefficient keeping the electric charge neutral].